--  @testpoint:opengauss关键字public(非保留)，作为函数名

--关键字不带引号-成功
drop function if exists public;
create function public(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function public;
--关键字带双引号-成功
drop function if exists "public";
create function "public"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function "public";
--关键字带单引号-合理报错
drop function if exists 'public';
create function 'public'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `public`;
create function `public`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/